|Publication Type:||Journal Article|
|Year of Publication:||1924|
|Journal:||Annals of the Entomological Society of America|
Several years ago the writer discovered stridular areas on the anterior femora and tibiæ of the males of <I>Buenoa margaritacea</I> Bueno. These he figured in an account of the life history of this backswimmer which appeared in the Entomological News, Vol. XXVIII, pp. 174-183, 1917. Of course it was surmised that these structures were concerned with sound production although the insects had not been heard to stridulate. On various occasions since that time <I>B. margaritacea</I> Bueno males have been confined in aquaria in the laboratory with the hope that a chance observation might be made regarding their chirping but without results. Since no real effort had been made to secure information on this point, it was determined to study the behavior of the species in the vicinity of the University of Michigan Biological Field Station on Douglas Lake.